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AssigneeCqc Intime Testing Technology Co., Ltd.
InventorsYixin Zhu, Jie Wang, Xiyu Song, Yang Zhou, Mei Zhang
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An organic wastewater treatment method based on a multi-element co-doping TiO2 nano photocatalytic material includes preparing a sulfur-titanium dioxide mixture, hydrothermally reacting the sulfur-titanium dioxide mixture with copper chloride, ammonia, strong alkali, a transition metal salt and the like, reacting the resulting reaction product with hydrofluoric acid, then performing temperature programming thermal treatment in air to obtain the multi-element co-doping TiO2 nano photocatalytic material, and then treating organic wastewater with the multi-element co-doping TiO2 nano photocatalytic material under the irradiation of visible light. The organic wastewater treatment method is efficient and rapid, safe and environmental-friendly, can thoroughly degrade many types of organic pollutants, ammonia nitrogen and the like, and does not cause secondary pollution; furthermore, the adopted multi-element co-doping TiO2 nano photocatalytic material can be regenerated and recycled only by simple calcination, and the cost is inexpensive.
An organic wastewater treatment method based on a multi-element co-doping TiO2 nano photocatalytic material, comprising:
Dependencies are inferred from the claim text.
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Combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36: with zinc, cadmium or mercury
Treatment of water, waste water, or sewage: by irradiation
Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof: titanium; Oxides or hydroxides thereof
Regeneration or reactivation: of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper
About 13 years 11 months of term left · ends 20 Sep 2040 (estimated)
This application is the national phase entry of International Application No. PCT/CN2020/113942, filed on Sep. 8, 2020, which is based upon and claims priority to Chinese Patent Application No. 202010903705.X, filed on Sep. 1, 2020, the entire contents of which are incorporated herein by reference.
The present application relates to the technical field of catalytic materials, particularly to an organic wastewater treatment method based on a multi-element co-doping TiO2 nano photocatalytic material.
Increasingly serious environmental pollution and outburst of energy crisis have attracted attentions from countries in the world. A photocatalytic technology is expected to play a key role in solving environmental pollution and energy crisis. At present, more and more science researchers have been attracted to invest in related researches.
FIGURE is a scanning electron microscope (SEM) image of a multi-element co-doping TiO2 nano photocatalytic material prepared in example 1 of the present application.
The present application will be further described through the following examples. According to the following examples, the present application can be better understood. However, those skilled in the art easily understand that specific material ratios, process conditions and results described in examples are only for illustrating the present application, but not limiting the present application described in claims in detail.
Example 1 An organic wastewater treatment method based on a multi-element co-doping TiO2 nano photocatalytic material comprises:
(1) butyl titanate and titanium disulfide were successively added into absolute ethyl alcohol and continuously stirred until dropwise addition was completed, then a 1 mol/L nitric acid solution was dropwise added, and the above mixture was stirred for 1 h in water bath at 30° C. at the rate of 300 r/min to obtain a sulfur-titanium dioxide mixture, wherein a volume ratio of butyl titanate to absolute ethyl alcohol to nitric acid solution was 3:12:1, and a volume-to-mass ratio of butyl titanate to titanium disulfide was 1 mL: 1 g;